Alexander w



(110 Model.) I

A. W. OADMAN & S. B. HANDY.

' Valve. v No. 237,811. Patented Feb. 15,1881.

-FETERS. PHOTO-LITHDGRAPNER, WASHINGTON D C Ur'rnn arer nrcn.

ALEXANDER W. CADMAN, OF PITTSBURG, AND STEPHEN B. HANDY, OF ALLEGHENY, PA.; SAID HANDY ASSIGNOR TO SAID OADMAN.

VALVE.

SPECIFICATION forming part of Letters Patent No. 237,811, dated February 15, 1881.

Application filed September 15, 1880. (No model.)

To all whom 'Lt may concern Be it known that we, ALEXANDER W. GAD- MAN, of Pittsburg, and STEPHEN B. HANDY,

of Allegheny, both in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Valves; and we do hereby declare the following to be a full, clear, and exact description thereof.

In the construction of coke-ovens it is customary to lay a water pipe or main along the front of the row of ovens, and to make a branch pipe provided with a valve and a screw-nozzle for the attachment of a hose, at each oven. The water is used for the purpose of damping the fires in the ovens. The branch pipes project above the main, which is placed at or below the surface of the ground, and the valve has heretofore been operated by a long stem which projected above the shell, and this stem,

being unsupported and exposed, was often bent and the Valve rendered temporarily useless by pokers or other heavy coking-tools falling upon it, or by its being struck by the heavy iron wheelbarrows used at the ovens.

In this form of valve the valve proper was opened and closed by a screw on the stem working in a nut or cap-piece, and the raising of the valve made a further unsupported exposure of the stem, and also involved the use of a stufling-box to close or seal the joint around the stem. Great inconvenience was experienced in keeping this stuffing-box properly packed. Fig. 3 of the drawings shows the old form of valve, 0 being the vertically-moving exposed screw-stem, and s the stuffingbox through which it extends.

Our invention consists in a valve which rises on its stem, and has a rotating stem which is surrounded and supported by and forms a tight 0 joint withthe body or shell.

To enable others skilled in the art to make and use our invention, we will now describe its construction and mode of operation by reference to' the accompanying drawings, in

which Figure 1 is a sectional view of our improved valve. Fig. 2 is a cross-section of the same, and Fig. 3 is a sectional view of the valve formerly used.

Like letters of reference indicate like parts in each. i

The body a, with its discharge-pipe or branch 0, is cast in the usual way. Heretofore it was customary to make it with a large opening, d, Fig. 3, at the top for the insertion of the valve and stem, and to close the same by a nut or cap, 0, screwed into it. It the top or cap of a valve is separate from the body, it is customary to finish it on the lathe, but if not separate it is permitted to go unfinished with the body of the valve. As the top or cap 0 is separate from the body, itis finished in the usual way. This requires skilled labor and increases the cost of the valve.

In order to make a tight joint at the stem, which moves up and down in opening and closing the valve, it is passed through a stuffing-box, s, in the top of the cap 0 and closed by the screw-cap s. This stuffing-box has to be kept packed, and, as attendants are proverbially careless, it is generally leaking by reason of neglect. The stem 0 extends still farther above the cap 8, and is there totally unsupported.

Our improved shell is cast with the cap 7 0 solid or in one piece therewith, and having a hole, d, through itjust large enough for the passage of the stem 6, and at the lower end of the hole cl it is cut out by a tool inserted through the lower opening, f, to form a tapered or conical seat, 9, for the cone-shaped enlargement h of the stem 6. The inclined surfaces 9 and h, being turned or ground true to each other, form a tight joint when the stem is in place, which prevents leakage through the top of the shell. The stem 6 is threaded below the tapered part, as at p, and the valve proper, i, which is threaded internally, is mounted thereon. It is prevented from turning with the stem by means of the lugs 70, cast 0 upon the sides of the shell or, entering the scores or grooves Z in its sides, and it is provided at its lower end with the usual washer j, of leather or other suitable material, and has its seat at min the lower part of the chamber. 5

The discharge-pipe 1) extends downward at a proper angle to permit the hose attached thereto to descend and lie upon the ground without forming an abrupt bend or kink, because that such a bend always causes the hose to crack and break at that point. and the branch extending down from the side of the shell drains it sufficiently, when closed, to prevent damage by the water accumulating and freezing therein in cold weather. The tapered part h of the stem is drawn snugly to its seat when the ring orhandle nis put on. The ring or handle it rests and turns on the upper edge of the shell, which is preferably turned smooth to form a seat for it. Thus the solid shell surrounds and supports the stem, so that it cannot be bent or broken by tools falling; upon it or wheelbarrows or other heavy objects striking it. The cap 0, being cast with and forming part of the shell, does not require to be finished, but is left rough, as it comes from the sand. The valve is inserted through the bottom opening, 0, in which the seat-piece vq is screwed.

If desired, the lower part of the shell may be cast solid and the valve dropped in from above; but in that case, While the stem would be fully supported when the top piece was screwed in, the top piece would have to be finished, and this would add to the cost of the valve. The reason for finishing a cap-piece is that, being cast separate, the two parts of the shell do not exactly match at the edges and have to be ground ofi' to make them do so. In the lower or larger piece this finishing is confined to a narrow band which gives an ornamental appearance; but theeap, beingsmaller, is finished throughout to correspond with the edge of the larger piece and give it a uniform appearance. The lugs 7! do not fit closely in the grooves l, and so do not have to be ground, but may be left rough, as they come from the sand. If the valve is placed below the ground,

the branch I) should incline upward to prevent the kinking of the hose.

The operation of our improved construction is as follows: By turning the handle a the valve is caused to rise on the stem and off its seat, and by reversing it the valve is caused to descend and be seated; but the stem does not rise or fall.

We save in the construction of our valve the upper cap and stuffing-hox s, which in an inch valve would amount tojust a half-pound of metal, the value of which, at present price of brass, is fifteen cents, and when it is made as in Fig. l we save the finishing of the cap. In use we save packing the stem.

An equivalent construction of the projections on the shell is to make the lugs on the valve and the grooves on the shell. the latter being, done by casting two ribs side by side, thereby forming a groove between them.

If desired, the stem 0 may have a collar, instead of the cone-piece It, provided with a washer and seating in a suitable seat in the cap 0. It may also be drawn to its seat by a nut on the upper end above the handle, or by a stiff spring.

In casethe valve is used with steam theseat or would be made tapering or conical.

'What we claim as our invention, and desire to secure by Letters Patent, is-

1. The combination of a rotating valvestem, a valve which rises on the stem, and a solid shell which surrounds and supports the upper part of the stem, substantially as and for the purposes described.

2. The combination of a valveshell having a cap cast integral therewith, provided with an opening for the passage of the valve-stem,

and a rotating stem having ahead or collar which rests upon a seat 011 the upper part of the shell, and a cone or other enlargement working in a corresponding seat in the inside of the shell, substantially as and for the purposes described.

In testimony whereof we have hereunto set our hands.

ALEX. \V. CADMAN. STEPHEN B. HANDY.

\Vitnesses:

R. H. WHI'r'rLusEY, T. B. KERR. 

